二衬支护时机
second liner timbering opportunity
MC桩组合支护结构
MC composite support structure
U型钢-锚网支护
U-steel bolting with wire mesh
U型棚支护
Support of steel shed in form of U-shape Injecting
边坡喷锚支护
shotcrete and rock bolt support in the slope
边坡支护
slope support
side support
Support engineering of soil border-slope
Slope protection
side ascent protection
slope supporting
slope shoring
slope retaining
side slop supporting
protective slope
Side slope support
不规则梯形支护
irregular trapezoid support